4.2.1.31 dimer - 4.2.1.31 dimer alpha1 beta1, 1 * 58000 + 1 * 28000, SDS-PAGE 4.2.1.31 dimer alpha1 beta1, 1 * 57000 + 1 * 24000, SDS-PAGE 4.2.1.31 monomer 1 * 69500, SDS-PAGE 4.2.1.31 additional information amino acid composition